The top cannabis official in Gov. Phil Murphy’s administration is leaving for a new post in the New Jersey Department of Health. Jeff Brown, who currently serves as the Cannabis Regulatory Commission’s executive director, has been named the department’s deputy commissioner for health systems, Murphy announced Tuesday. Christopher Riggs, who succeeded Kelly Anderson-Thomas as deputy director when she was named deputy commissioner for public health services, will take over as acting director later this month. Riggs was previously the CRC’s general counsel. “Since its establishment, Jeff and Chri…